You are here

UVC stream buffer size issue | Cypress Semiconductor

UVC stream buffer size issue

Summary: 1 Reply, Latest post by NIKL on 16 Sep 2014 11:07 PM PDT
Verified Answers: 0
Last post
Log in to post new comments.
Xiang Wang's picture
14 posts


        We have a USB3.0 Camera which is based on FX3.And we want to implement small ROI with high framerate,such as 64*64@500fps or 32*32@1000fps

        Since 64*64*2(2bytes each pixel) is smaller than the original UVC stream buffer size(1024*16),so i changed the "Max number of packets per burst" to 7(original:15)for Super Speed Endpoint Companion Descriptor,that is 1024*8=64*64*2,meanwhile,set the counter(address/data) in GPIF II to 2043((1024*8-16)/4 -1,we used 32bit bus width) but it didn't work,,did i miss anything?Thanks,

        We also have 1280*1024 and 640*480 resolution for this camera,before changing the stream buffer size thing,they both could work,after that,i got nothing,none of these modes could work.




NIKL's picture
Cypress Employee
283 posts

 Can you please post your SS companion descriptor here?

If not please create a tech support case, so that you could a speedy solution to your problem.

Log in to post new comments.